HP Probook 450 G9 Maintenance And Service Manual page 6

Enabling HP Easy Clean (select products only) .......................................................................................................35
Removing dirt and debris from your computer.......................................................................................................35
Cleaning your computer with a disinfectant ...........................................................................................................36
Caring for wood veneer (select products only) .......................................................................................................37
Packaging and transporting guidelines ..........................................................................................................................37
Accessing support information .......................................................................................................................................37
5 Removal and replacement procedures for Customer Self-Repair parts.............................................................................40
Component replacement procedures..............................................................................................................................40
Preparation for disassembly ...................................................................................................................................40
Bottom cover ...........................................................................................................................................................40
Using a SIM card (select products only)...................................................................................................................41
Determining the correct SIM card size for your computer..............................................................................42
Inserting a SIM card in an external slot ...........................................................................................................42
Memory modules.....................................................................................................................................................42
WLAN module ..........................................................................................................................................................44
WWAN module .........................................................................................................................................................46
Solid-state drive ......................................................................................................................................................47
6 Removal and replacement procedures for authorized service provider parts...................................................................50
Component replacement procedures..............................................................................................................................50
Preparation for disassembly ...................................................................................................................................50
Battery .....................................................................................................................................................................50
RTC battery ..............................................................................................................................................................51
I/O board ..................................................................................................................................................................52
Touchpad .................................................................................................................................................................53
Fan ...........................................................................................................................................................................54
Fingerprint reader board .........................................................................................................................................55
Heat sink ..................................................................................................................................................................56
System board...........................................................................................................................................................57
Speakers ..................................................................................................................................................................60
Power connector cable ............................................................................................................................................61
Display assembly.....................................................................................................................................................62
Top cover with keyboard..........................................................................................................................................70
7 Computer Setup (BIOS), TPM, and HP Sure Start.................................................................................................................72
Using Computer Setup.....................................................................................................................................................72
Navigating and selecting in Computer Setup .........................................................................................................72
Restoring factory settings in Computer Setup .......................................................................................................72
Updating the BIOS....................................................................................................................................................73
Determining the BIOS version .........................................................................................................................73
Preparing for a BIOS update ............................................................................................................................73
Downloading a BIOS update ....................................................................................................................74
Installing a BIOS update ..........................................................................................................................74
Changing the boot order using the f9 prompt .......................................................................................................74
TPM BIOS settings (select products only) .......................................................................................................................75
Using HP Sure Start (select products only) .....................................................................................................................75
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